What I’m doing wrong on my website?

I wanted to make my first SEO website and score some good traffic, ranking 1# for a couple of easy keywords.
So I went for my own language keywords (Portuguese):
"programa de dj" – 5.400 monthly searches – low comp (I've bought this emd, my url is: www.programadedj.net)
"baixar virtual dj" – 9.900 monthly searches – low comp
"baixar audacity" – 3.600 monthly searches – low comp
"baixar skins para virtual dj" -…
What I'm doing wrong on my website?

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